KR101129852B1 - A filter bed making method of bankfiltered water thereof treatment apparatus - Google Patents

Abstract

The present invention relates to a water purification plant for treating riverside filtration water, and the filtration layer composition of the riverside filtration water by washing and screening the sediment layer of the riverside to remove fine sand and mud, to form a filter layer to allow riverside filtration The present invention relates to a river filtration system using the method.

The present invention for this purpose,

Excavating and transporting the soil of the riverbank;

Classifying the transported soil into large stones, gravel, standard soil, and fine soil;

Washing the standard soil in a wash bath;

Classifying the washed standard soil in a wet centrifugal classifier (50) into media and fine soil (90);

Dehydrating the filter media classified by the wet centrifuge in a dehydrator (60) to produce the filter media (80);

Dewatering the fine earth (90) classified in the wet centrifugal classifier in the fine earth yarn dehydrator (140),

Separating the desorption liquid 70 of the dehydrator 60 and the desorption liquid 145 of the fine earth and sand dehydrator 140 into sediment and supernatant in the sedimentation basin 150;

Dehydrating the precipitate in a sediment dehydrator (160) to produce a dewatered cake (170);

Step of crushing the large stone 100 separated by the aggregate classifier in the crusher 110 and the method of forming a river filtration filtration layer formed by filling the filter medium (80) and the residual stone 120 produced by the above method and its Provided is a river filtration system using the method.

In the present invention, by using the filter medium that already exists in the field, it is easy to obtain the filter medium, the cost is reduced and economical, it is possible to obtain abundant river side filtration by installing in most rivers or streams of the country lacking the river water filtration, There is an effect of maximizing the efficiency of using water resources to produce good tap water.

Riverside filtration, soil sedimentation, blunt, filter layer composition.

Description

A filter bed making method of bankfiltered water especially treatment apparatus

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a river filtration water purification plant, and more particularly, to a method for forming a river filtration water filter layer using soil (soil) of a riverside blister and a river filtration system using the same.

Riverside filtration is water that is present in a very clean underground aquifer due to the degradation of microorganisms for a long period of time as the river or surface water passes through the riverside aquifer.

Riverside filtrate is an excellent tap water material because of its extremely low content of organic contaminants and suspended solids.

Thus, at this time when pollution of rivers and surface waters is on the rise, riverside filtrates are receiving great attention and expectation for most people who want good water.

However, in many water systems in Korea, including the Han River, the amount of riverside filtered water is very small compared to demand.

Therefore, it is necessary to analyze the cause of the small amount of riverside filtration and overcome it, and to secure enough riverside filtration.

The present invention is to remove the fine sand and mud in the soil in the existing ditch in a small amount of riverbank filtration, the composition method of the riverbank filtrate filtration layer using the remaining soil as a medium and riverbank filtration using the method Relates to a device.

To this end, the present invention,

Digging (10) and transporting (20) the soil of the riverside blister;

Classifying the transported soil by the aggregate classifier 30 into large stones, gravel, standard soil, and fine soil;

Washing the standard soil sand in the washing tank 40;

Classifying the washed standard soil to the media and the fine soil (90) in a wet centrifuge (50);

Dehydrating the filter media classified by the wet centrifuge in a dehydrator (60) to produce the filter media (80);

Dewatering the fine earth (90) classified in the wet centrifugal classifier in the fine earth dust dehydrator (140);

Precipitating the desorption liquid (70) of the dehydrator (60) and the desorption liquid (145) of the fine earth and sand dehydrator (140) in the immersion battery (500), separating the supernatant and the sediment;

Dehydrating the precipitate in a dehydrator (160) to produce a dewatered cake (170);

A riverside filtrate filtration layer formed by crushing the large stone 100 separated from the aggregate classifier into the remaining stones 120 in the crusher 110 and filling the media and the remaining stones produced by the method; And

It provides a filter layer composition method of the riverbank filtration water to be treated by supplying the natural water permeation or coagulation sedimentation and precipitation of the river water to the filtration layer in a separate facility or artificial sedimentation, and a river filtration system using the method.

The present invention excavates, washes, and selects existing soil that is already present to form a filter layer by using the filter medium, thereby reducing the time and cost according to the composition of the filter layer, even if the riverbank filtration water is insufficient in sufficient riverside filtration water There is an effect that can be produced.

There are several reasons for the small amount of riverside filtration. The geological basic conditions are good because the sand layer is poor due to poor sand layer in the soil of the Dunchi, and the sand layer is good, but the filtration layer (also called aquifer) The thin layer of clay and silty fine soil is composed of several layers or mixed to form a thin impermeable layer, so that water cannot pass through these layers or the rate of passage of the water is very small (impermeable layer). Representative is the case where the amount of riverside filtered water is small.

Rivers and rivers frequently flood during the summer rainy season, which is repeated almost every year, and there is a difference in the extent to which ocher and silty sands (very small sands) contained in the overflowing water sink to the riverside. The sands of the sand have multiple layers of impermeable water or ocher.

The sand layer is good, but if several layers of impermeable layers are present or mixed, the sand is washed to remove the impermeable layer to facilitate the passage of the riverside filtrate, thereby increasing the amount of riverside filtered water, which is often the case.

The riverbed filtrate can be formed by digging out the sand and replacing it with filtrates, but for large installations, enormous amounts of filtrate are difficult for both physical and economic reasons, and it is difficult to discard the excavated soil.

Specific contents for the practice of the present invention are as follows.

Select the location of the riverbed filtration layer and the water intake in the river and the river, and excavate the soil of the existing beach to the required depth.

Excavation is preferably carried out using an excavator, but depending on the site conditions such as underground water level, it may be mixed with water and pumped up using a dredging pump and a transfer pipe.

The excavated soil is transported using a transport vehicle, and supplied to the aggregate classifier 30.

Aggregate classifiers classify and separate soil into large stones, gravel, standard soil, and fine soil.

Standard soil size is preferably 0.4mm ~ 2.0mm, but it can be decided by changing the size up and down depending on the condition of soil in the field.

The fine soil 130 sorted and separated by the aggregate classifier is used as a soil for returning to the soil, or used as a backfilling place, and a large stone is crushed into small pieces in the crusher 110 to make a remnant 120.

The size of the crushed fine stone is in the range of 10-50mm, and it is used together with the gravel where it is needed, such as the lower part of the filtration layer or the river contact portion of the naturally penetrating filtration layer.

Since standard soils separated and separated by the aggregate classifier are attached with foreign substances such as mud (ocher), iron, and manganese compounds, they are washed in the washing tank 40.

The cleaning tank 40 is supplied with clean water, and using an air aeration device or a mechanical stirrer, while strongly stirring the supplied standard soil in water, it separates and cleans the soil or foreign matter attached to the standard soil.

The mixture of the water and the standard earth and sand passed through the washing tank 40 is separated into standard earth and sediment (miceto sand) in the wet centrifugal classifier 50, and the separated mixture of standard earth and water is dewatered in the dehydrator 60 After making the filter sand 80 and temporarily storing it, excavating the soil of the ditch, and then filling the excavated place again to form a filter layer.

When using the dredging pump method, the sand and water are separated from the wet centrifugal separator by the same method as described above because the sand and water are washed cleanly during the pumping. Do the same.

The mixture of the fine earth sand (90 and water) passed through the wet centrifugal classifier is dewatered in the fine earth soil dehydrator 140, and the dehydrated fine earth soil is taken out to the outside and used as soil for backfilling.

The wet centrifuge is preferably a device called a cyclone that uses the centrifugal force of water, heavy soil is settled at the bottom, light soil is discharged through the top, the sedimentation rate of the soil is the size (diameter) of the soil Since it increases in proportion to the square of, it is possible to determine the size of the standard soil classified by controlling the flow velocity passing upward using this property.

The desorption liquid generated in the dehydrator and the fine earth and sand dehydrator is transferred to the sedimentation basin 150, separated into supernatant and sediment, and the supernatant is discharged or partially returned to the washing tank 40 for reuse.

The sediment separated from the sedimentation basin is dehydrated in the sediment dehydrator 160 to make a dehydration cake 170 to be taken out to the outside for disposal.

The dehydrator is preferably a belt filter press type mechanical dehydrator, but depending on the site conditions, a sand stacking method using natural dehydration may also be used.

In this case, the dewatered desorption solution is also treated in the settling basin 150.

The filtration layer of the riverside filtrate formed as described above is provided with a radial or vertical water collecting well (not shown), or a water collecting tank 4 is provided at the lower portion of the filtering layer as shown in FIG. A water intake pump 2 is provided, and the riverside filtered water is collected and transferred to a water treatment plant for treatment.

As shown in FIG. 3, the filtration layer of the riverside filtration water forms a deep and thick filtration layer on the bottom part and the bottom of the river or river, so that the river or river water naturally penetrates, and a filtration layer having a specific depth and width in the blunt. In addition, a method of artificially pumping and supplying water from a river or a stream to the filter layer and mixing and flocculating sedimentation of the water from a river or a stream or a dam, and then supplying the supernatant thereof to be treated in the filter bed of the river filtration water may be used. Can be.

When digging soil of the blunt, if the soil is hard, the slope is digging as shown in the village of Fig. 3, if the soil is soft or narrow place as shown in Fig. 3 and dug it with a pile of river.

Among the dull soils, the insufficient amount of filter sand discarded by the micro soils is replenished by treating the nearby ditch soils as described above.

The riverside filtrate transferred from the intake pump (2) is produced as tap water by removing iron, manganese and trace organic matter through aeration tank or ozone contacting paper, filter paper, and activated carbon adsorption paper, and then disinfecting with chlorine.

Since the filter layer formed by washing does not contain iron and manganese components, in some cases, the riverside filtration plant may produce tap water by simple sand filtration and disinfection.

When the filtration layer of the riverside filtration water prepared as described above is clogged or the amount of filtration decreases after long-term use, the filtration layer may be washed and refilled in the same manner as when the filter layer is first formed.

The present invention has been described with reference to the drawings, mainly described for the method of forming a filtration layer of the riverside filtration of a specific structure and the treatment apparatus of the riverside filtration using the method, which can be modified and changed innumerable by those skilled in the art, all these changes And variations will be construed as being included in the protection scope of the present invention.

1 is a process block diagram of the present invention.

2 is a plan view of the steel and the blunt.

3 is a cross-sectional view of a naturally penetrating filter layer having a deep and wide filter layer.

4 is a cross-sectional view showing a filter layer, a lower sump, and a water intake well formed in a specific width and depth on a blunt tooth;

Claims (6)

Digging (10) and transporting (20) the soil of the riverside blister; Classifying the transported soil by the aggregate classifier 30 into large stones, gravel, standard soil, and fine soil; Washing the standard soil sediment separated from the aggregate classifier in the washing tank 40; Classifying the washed standard soil to the media and the fine soil (90) in a wet centrifuge (50); Dehydrating the filter media classified by the wet centrifuge in a dehydrator (60) to produce the filter media (80); Dewatering the fine earth (90) classified in the wet centrifugal classifier in the fine earth dust dehydrator (140); Precipitating the desorption liquid (70) of the dehydrator (60) and the desorption liquid (145) of the fine earth and sand dehydrator in the sedimentation basin (150), separating the supernatant and the sediment; Dehydrating the precipitate in a dehydrator (160) to produce a dewatered cake (170); Crushing the large stones (100) separated from the aggregate classifier into the remnants (120) in the crusher (110); And A method for forming a filtration layer of riverside filtrate, characterized in that to form a filtration layer by filling the filter medium and the residual stones produced in the step. The method of claim 1, wherein the excavation and transport of the soil of the blunt is performed using an excavator, a transport vehicle or a dredging pump, or the above two methods are used together. The method of claim 1, wherein the filtration layer of the riverside filtration water is deep and wide composition to penetrate naturally, such as river water, or to a specific width and depth in the blunt artificial artificial pumping of the river water or to supply the mixed water, cohesive precipitated sedimentation in a separate facility Method for forming a filter layer of riverside filtration water, characterized in that. The method of claim 1, wherein the dehydrator uses a mechanical dehydrator or a gravity dehydration method. The method of claim 1, wherein the washing layer is washed with water and air or by stirring with a mechanical stirrer. A device for treating riverside filtrate, comprising a radial or vertical sump or a sump installed in a lower part of the filtration layer, which is formed in the filtration layer formed by the method for forming the filtration layer of the riverside filtration water.

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